That's an interesting idea. I don't like how rooks are counted as 5 though, because they're usually clumsy defenders at least when you get down to attacking in the corner (the 2nd time he counted). They can even get in the king's way and help you mate.
But he's a GM so there must be something to it.
well the first rough consideration that jump to my mind it's that rather the points someone should consider the activity of the pieces, but as you said he's a GM...
...still I doubt that Karpov started to count the points :-p
I actually have done something similar.
However, It was after watching a Kasparov video.
I can't remember which one it was.
However, Kasparov talked about how he was planning to attack.
He did a very similar idea.
There was one where he mentions just counting the number of attackers vs defenders. I think it was in a game vs Karpov where he said he didn't need to calculate a sacrifice, it just had to work because the attackers greatly outnumbered the defenders.
In a different one Kasparov mentions as a kid he had a habit of dividing the board down the middle and comparing how many pieces were on each side of the middle line, which is another interesting idea.
I liked the video. It's nice to know how grandmasters think. I'd heard of counting pieces before when considering an attack, and I've been using that method ever since I read Nigel Short's tip to that effect, but I never heard of counting their values in the same context.
(p. 65)
NIGEL SHORT'S TIP
o Before you undertake any type
of attack, sacrificial or otherwise,
always count the number of
pieces you will be attacking with
and try to ensure it exceeds the
number of pieces your opponent
will be defending with
Short, Nigel. 1989. Nigel Short's Chess Skills. The Hamlyn Publishing Group Limited.
There was one where he mentions just counting the number of attackers vs defenders. I think it was in a game vs Karpov where he said he didn't need to calculate a sacrifice, it just had to work because the attackers greatly outnumbered the defenders.
In a different one Kasparov mentions as a kid he had a habit of dividing the board down the middle and comparing how many pieces were on each side of the middle line, which is another interesting idea.
Yes it was against Karpov indeed.
I believe the line which was played was a Ruy Lopez and he was white.
He ended up doing a nice king side attack.
He didn't give his pieces values of like 9-3-3-5 or anything which is what the guy in the video did.
However, he considered any piece near Karpovs king as 1 attacker.
Than any piece Karpov had near by or able to help his king as 1 defender.
Kasparov ended up with like 5 attackers and 3 defenders.
Kasparov ended up winning for sure. However, It was a very nice interview video.
youtube suggested me this video:
https://www.youtube.com/watch?v=g3Czm8-Rmms
it's quite interesting it self but one thing really surprised me, around minute 24'55'' he introudce the rules of attackers and defenders counting the points.
I've already seen in the past making (rough) estimation about how much successful could be an attack against the king by counting the attacking pieces involved and the counting the defending pieces as well.
although I already knew the value of the pieces this thing to count them while attacking (or defending) it's quite new to me.